Michail Antonio scored five minutes from time to give West Ham victory over Bournemouth in the first Premier League match at the London Stadium.
Antonio rose highest at the back post to head in Gokhan Tore's cross and decide a game of few chances.
The goal came eight minutes after Bournemouth's Harry Arter was sent off for a second bookable offence.
Cherries goalkeeper Artur Boruc saved well from Enner Valencia in the first half, while Adrian denied Joshua King.
Happy (new) homecoming
A club-record 56,977 supporters were in attendance as West Ham played their first league match at their new home, having left Upton Park at the end of last season.